<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addNewTodo='addNewTodo'/>
      <!-- 第二步：通过v-bind把整个数组进行props传值给List子组件 -->
      <List :todoList='todoList'/>
      <Footer/>
    </div>
  </div>
</template>

<script>
import { nanoid } from 'nanoid'

import Header from './components/Header'
import List from './components/List'
import Footer from './components/Footer'


export default {
  name: 'App',
  data(){
    return{
      //静态页面部署好后的第一步：定义列表的数据
      todoList:[
        {id:nanoid(),thing:'打篮球',done:false},
        {id:nanoid(),thing:'爬山',done:false},
        {id:nanoid(),thing:'说唱',done:false}
      ]
    }
  },
  components:{
    Header,
    List,
    Footer
  },
  // 第七步：发布数据，在父组件app中设置一个方法，并把这个方法传给子组件header
  methods:{
    addNewTodo(newTodo){
        this.todoList.unshift(newTodo)
    }
  }
 
}
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

</style>
